Core batch: ParparVM perf improvements + RichText component & GPU shadow rendering by shai-almog · Pull Request #5421 · codenameone/CodenameOne

shai-almog · 2026-07-20T04:12:00Z

Summary

A batch of independent Codename One core improvements, grouped into one PR to validate CI together and keep the work focused. Two areas: ParparVM (the iOS bytecode→C translator + C runtime + minimal Java API) and a set of UI component / rendering additions. No public API is removed or broken, and both parparvm and core compile clean against current master.

ParparVM (`vm/`)

Strings & allocation

Compact strings (JEP 254-style). String.value holds a byte[] (Latin-1) or char[] (UTF-16) with a coder discriminator, halving footprint for the common ASCII case. Coder-aware fast paths in nativeMethods.m.
Fused string allocation. The byte[] backing store is inlined into the String object block (single allocation) via the BiBOP allocator, using an init-before-publish discipline safe under the concurrent collector.
Direct-digit Long/Integer.toString fast path (no intermediate buffer).
Concatenation lowering. makeConcat/makeConcatWithConstants sites with 2–5 all-String parts are rewritten to a cn1ConcatN native that sizes the result once and fills it directly.

Arithmetic & escape analysis

Per-usage escape analysis de-gates scalar replacement: a provably non-escaping object used only via trivial accessors becomes registers instead of a heap allocation.
Double comparison codegen avoids clang's fcsel if-conversion (which serializes FP recurrences) by biasing the guard to a branch; dcmp fusion plus a noreturn OOB helper that unblocks LICM under -fno-strict-aliasing.

Concurrent GC

Sweep crash fix on abandoned unpublished object slots (null-guards + slot reclaim).

Benchmarks

Updated self-contained micro-benchmark suite (vm/benchmarks) that runs identically on Java SE and the translated C runtime.

UI components (`CodenameOne/src`, `Ports/`)

RichTextComponent + RichRunPainter — a rich-text rendering/editing component over a block model (RichBlocks/RichView/HtmlImporter/TextStyle), with a unit test.
GPU-accelerated shape shadows for RoundRectBorder. New Graphics.fillShapeShadow / isShapeShadowSupported path avoids the per-border bitmap cache where the platform supports it (JavaSE paints directly; Android falls back to the cached path, documented inline).
Clipboard content plumbing in CodenameOneImplementation; MCP tooling updates (MCPServer / MCPSocketTransport).

Testing

mvn -pl parparvm compile — BUILD SUCCESS.
mvn -pl core compile -Plocal-dev-javase — BUILD SUCCESS.
Benchmark suite exercises the VM paths on both Java SE and translated C; RichTextComponentTest covers the component.

Risk

Low-to-moderate. Changes are confined to vm/, CodenameOne/src, and platform ports; no public API changes. The compact-string representation is the most invasive VM change (covered by the string benchmark + concurrent-GC sweep fix); the GPU-shadow path degrades gracefully to the existing cached rendering where unsupported.

🤖 Generated with Claude Code

shai-almog · 2026-07-20T07:11:30Z

Compared 12 screenshots: 12 matched.
✅ JavaSE simulator integration screenshots matched stored baselines.

github-actions · 2026-07-20T07:22:38Z

Cloudflare Preview

URL: https://pr-5421-website-preview.codenameone.pages.dev
Branch: pr-5421-website-preview

shai-almog · 2026-07-20T07:36:39Z

Compared 146 screenshots: 146 matched.
Native Windows port (x64 / Intel-AMD): full hellocodenameone screenshot suite rendered offscreen with Direct2D/DirectWrite, plus the real benchmarks (base64 native/CN1/SIMD, image createMask/applyMask/modifyAlpha/PNG/JPEG, SSE2 SIMD kernels). Compared against the in-repo baseline in scripts/windows/screenshots.

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 60ms / native 3ms = 20.0x speedup
SIMD float-mul (64K x300)	java 59ms / native 3ms = 19.6x speedup
SIMD kernel correctness	PASS (native result == scalar reference)

shai-almog · 2026-07-20T07:51:25Z

Compared 181 screenshots: 181 matched.
✅ JavaScript-port screenshot tests passed.

…ichText component & GPU shadow Groups a set of independent Codename One core improvements into one PR to validate CI together. No public API is removed or broken. ## ParparVM (vm/) — iOS bytecode → C translation - Compact strings (JEP 254-style): String.value holds byte[] (Latin-1) or char[] (UTF-16) with a coder discriminator, halving footprint for ASCII; coder-aware fast paths in nativeMethods.m. - Fused string allocation: byte[] backing store inlined into the String object block (single allocation) via the BiBOP allocator, init-before- publish safe under the concurrent collector. - Direct-digit Long/Integer.toString fast path (no intermediate buffer). - String concat lowering: makeConcat/makeConcatWithConstants sites with 2-5 all-String parts rewritten to a cn1ConcatN native that sizes the result once and fills it directly. - Per-usage escape analysis de-gates scalar replacement. - Double comparison codegen avoids clang's fcsel if-conversion; dcmp fusion and a noreturn OOB helper that unblocks LICM under -fno-strict-aliasing. - Concurrent-GC sweep crash fix on abandoned unpublished object slots. - Updated self-contained micro-benchmark suite (vm/benchmarks). ## Compact-string native ABI follow-through Because compact strings changes String's native representation, hand-written native code that reads String.value as char[] is made coder-aware: - iOS port IOSNative.m splitString now reads through the coder-safe charAt/ substring accessors instead of casting the backing array to char[]. - The StackOverflow VM integration test's native helper decodes byte[] or char[] based on the value array class. ## UI components (CodenameOne/src, Ports/) - RichTextComponent + RichRunPainter: rich text rendering component with a block model (RichBlocks/RichView/HtmlImporter/TextStyle), unit test. - GPU-accelerated shape shadows for RoundRectBorder: Graphics.fillShapeShadow / isShapeShadowSupported avoids the per-border bitmap cache where supported (JavaSE paints directly; Android falls back to the cached path). - Clipboard content plumbing; MCP tooling updates. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

shai-almog · 2026-07-20T07:59:45Z

Compared 148 screenshots: 148 matched.
✅ Native Mac screenshot tests passed.

Benchmark Results

VM Translation Time: 0 seconds
Compilation Time: 210 seconds

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 108ms / native 6ms = 18.0x speedup
SIMD float-mul (64K x300)	java 113ms / native 4ms = 28.2x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	active (NEON-accelerated)
Base64 CN1 encode	170.000 ms
Base64 CN1 decode	114.000 ms
Base64 native encode	546.000 ms
Base64 encode ratio (CN1/native)	0.311x (68.9% faster)
Base64 native decode	246.000 ms
Base64 decode ratio (CN1/native)	0.463x (53.7% faster)
Base64 SIMD encode	78.000 ms
Base64 encode ratio (SIMD/CN1)	0.459x (54.1% faster)
Base64 SIMD decode	51.000 ms
Base64 decode ratio (SIMD/CN1)	0.447x (55.3% faster)
Base64 encode ratio (SIMD/native)	0.143x (85.7% faster)
Base64 decode ratio (SIMD/native)	0.207x (79.3% faster)
Image encode benchmark iterations	100
Image createMask (SIMD off)	8.000 ms
Image createMask (SIMD on)	3.000 ms
Image createMask ratio (SIMD on/off)	0.375x (62.5% faster)
Image applyMask (SIMD off)	80.000 ms
Image applyMask (SIMD on)	47.000 ms
Image applyMask ratio (SIMD on/off)	0.588x (41.3% faster)
Image modifyAlpha (SIMD off)	57.000 ms
Image modifyAlpha (SIMD on)	35.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.614x (38.6% faster)
Image modifyAlpha removeColor (SIMD off)	49.000 ms
Image modifyAlpha removeColor (SIMD on)	31.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	0.633x (36.7% faster)

shai-almog · 2026-07-20T08:07:00Z

Compared 144 screenshots: 144 matched.
✅ Native Apple TV (tvOS, Metal) screenshot tests passed.

shai-almog · 2026-07-20T08:15:16Z

Compared 151 screenshots: 151 matched.

Native Android coverage

📊 Line coverage: 11.45% (12054/105280 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
- Other counters: instruction 10.25% (59713/582526), branch 5.31% (2826/53233), complexity 5.06% (2823/55788), method 7.56% (2168/28690), class 11.96% (489/4090)
- Lowest covered classes
  - kotlin.collections.kotlin.collections.ArraysKt___ArraysKt – 0.00% (0/6327 lines covered)
  - kotlin.collections.unsigned.kotlin.collections.unsigned.UArraysKt___UArraysKt – 0.00% (0/2384 lines covered)
  - org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.ClassReader – 0.00% (0/1519 lines covered)
  - kotlin.collections.kotlin.collections.CollectionsKt___CollectionsKt – 0.00% (0/1148 lines covered)
  - org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.MethodWriter – 0.00% (0/923 lines covered)
  - kotlin.sequences.kotlin.sequences.SequencesKt___SequencesKt – 0.00% (0/730 lines covered)
  - com.google.common.cache.com.google.common.cache.LocalCache$Segment – 0.00% (0/726 lines covered)
  - kotlin.text.kotlin.text.StringsKt___StringsKt – 0.00% (0/623 lines covered)
  - org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.Frame – 0.00% (0/564 lines covered)
  - kotlin.collections.kotlin.collections.ArraysKt___ArraysJvmKt – 0.00% (0/495 lines covered)

✅ Native Android screenshot tests passed.

Native Android coverage

📊 Line coverage: 11.45% (12054/105280 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
- Other counters: instruction 10.25% (59713/582526), branch 5.31% (2826/53233), complexity 5.06% (2823/55788), method 7.56% (2168/28690), class 11.96% (489/4090)
- Lowest covered classes
  - kotlin.collections.kotlin.collections.ArraysKt___ArraysKt – 0.00% (0/6327 lines covered)
  - kotlin.collections.unsigned.kotlin.collections.unsigned.UArraysKt___UArraysKt – 0.00% (0/2384 lines covered)
  - org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.ClassReader – 0.00% (0/1519 lines covered)
  - kotlin.collections.kotlin.collections.CollectionsKt___CollectionsKt – 0.00% (0/1148 lines covered)
  - org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.MethodWriter – 0.00% (0/923 lines covered)
  - kotlin.sequences.kotlin.sequences.SequencesKt___SequencesKt – 0.00% (0/730 lines covered)
  - com.google.common.cache.com.google.common.cache.LocalCache$Segment – 0.00% (0/726 lines covered)
  - kotlin.text.kotlin.text.StringsKt___StringsKt – 0.00% (0/623 lines covered)
  - org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.Frame – 0.00% (0/564 lines covered)
  - kotlin.collections.kotlin.collections.ArraysKt___ArraysJvmKt – 0.00% (0/495 lines covered)

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	scalar fallback (no native SIMD)
SIMD int-add (64K x300)	java 238ms / native 182ms = 1.3x speedup
SIMD float-mul (64K x300)	java 178ms / native 115ms = 1.5x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	gated to scalar (CPU autovectorizes scalar; explicit SIMD not beneficial here)
Base64 CN1 encode	86.000 ms
Base64 CN1 decode	84.000 ms
Base64 native encode	372.000 ms
Base64 encode ratio (CN1/native)	0.231x (76.9% faster)
Base64 native decode	289.000 ms
Base64 decode ratio (CN1/native)	0.291x (70.9% faster)
Image encode benchmark status	skipped (SIMD unsupported)

shai-almog · 2026-07-20T08:21:12Z

Compared 143 screenshots: 143 matched.
✅ Native iOS screenshot tests passed.

Benchmark Results

VM Translation Time: 0 seconds
Compilation Time: 376 seconds

Build and Run Timing

Metric	Duration
Simulator Boot	111000 ms
Simulator Boot (Run)	0 ms
App Install	15000 ms
App Launch	5000 ms
Test Execution	1134000 ms

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 135ms / native 2ms = 67.5x speedup
SIMD float-mul (64K x300)	java 119ms / native 5ms = 23.8x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	active (NEON-accelerated)
Base64 CN1 encode	282.000 ms
Base64 CN1 decode	159.000 ms
Base64 native encode	1010.000 ms
Base64 encode ratio (CN1/native)	0.279x (72.1% faster)
Base64 native decode	473.000 ms
Base64 decode ratio (CN1/native)	0.336x (66.4% faster)
Base64 SIMD encode	74.000 ms
Base64 encode ratio (SIMD/CN1)	0.262x (73.8% faster)
Base64 SIMD decode	47.000 ms
Base64 decode ratio (SIMD/CN1)	0.296x (70.4% faster)
Base64 encode ratio (SIMD/native)	0.073x (92.7% faster)
Base64 decode ratio (SIMD/native)	0.099x (90.1% faster)
Image encode benchmark iterations	100
Image createMask (SIMD off)	9.000 ms
Image createMask (SIMD on)	2.000 ms
Image createMask ratio (SIMD on/off)	0.222x (77.8% faster)
Image applyMask (SIMD off)	68.000 ms
Image applyMask (SIMD on)	57.000 ms
Image applyMask ratio (SIMD on/off)	0.838x (16.2% faster)
Image modifyAlpha (SIMD off)	60.000 ms
Image modifyAlpha (SIMD on)	46.000 ms
Image modifyAlpha ratio (SIMD on/off)	0.767x (23.3% faster)
Image modifyAlpha removeColor (SIMD off)	53.000 ms
Image modifyAlpha removeColor (SIMD on)	66.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	1.245x (24.5% slower)

github-actions · 2026-07-20T08:32:52Z

✅ ByteCodeTranslator Quality Report

Test & Coverage

✅ Tests: 405 total, 0 failed, 14 skipped

Benchmark Results

Execution Time: 16841 ms
Hotspots (Top 20 sampled methods):
- 18.87% java.util.ArrayList.indexOf (286 samples)
- 10.09% com.codename1.tools.translator.BytecodeMethod.addToConstantPool (153 samples)
- 4.02% java.lang.StringBuilder.append (61 samples)
- 2.37% com.codename1.tools.translator.Parser.cn1EnsureSubclassIndex (36 samples)
- 2.31% com.codename1.tools.translator.ByteCodeClass.hasDeclaredMethod (35 samples)
- 2.11% org.objectweb.asm.tree.analysis.Analyzer.findSubroutine (32 samples)
- 2.11% com.codename1.tools.translator.Parser.generateClassAndMethodIndexHeader (32 samples)
- 1.91% java.lang.String.equals (29 samples)
- 1.78% java.util.HashMap.put (27 samples)
- 1.65% com.codename1.tools.translator.bytecodes.Invoke.resolveDirectTarget (25 samples)
- 1.58% com.codename1.tools.translator.BytecodeMethod.appendCMethodPrefix (24 samples)
- 1.45% java.lang.System.identityHashCode (22 samples)
- 1.45% com.codename1.tools.translator.Parser.addToConstantPool (22 samples)
- 1.39% org.objectweb.asm.tree.analysis.Analyzer.analyze (21 samples)
- 1.39% com.codename1.tools.translator.BytecodeMethod.optimize (21 samples)
- 1.32% com.codename1.tools.translator.ByteCodeClass.markDependent (20 samples)
- 1.25% java.util.HashMap.hash (19 samples)
- 1.12% com.codename1.tools.translator.BytecodeMethod.equals (17 samples)
- 0.99% sun.nio.fs.UnixNativeDispatcher.open0 (15 samples)
- 0.92% java.lang.StringCoding.encode (14 samples)
⚠️ Coverage report not generated.

Static Analysis

✅ SpotBugs: no findings (report was not generated by the build).
⚠️ PMD report not generated.
⚠️ Checkstyle report not generated.

Generated automatically by the PR CI workflow.

shai-almog · 2026-07-20T08:43:38Z

Compared 149 screenshots: 149 matched.
✅ Native iOS Metal screenshot tests passed.

Benchmark Results

VM Translation Time: 0 seconds
Compilation Time: 530 seconds

Build and Run Timing

Metric	Duration
Simulator Boot	99000 ms
Simulator Boot (Run)	2000 ms
App Install	37000 ms
App Launch	3000 ms
Test Execution	1026000 ms

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 104ms / native 3ms = 34.6x speedup
SIMD float-mul (64K x300)	java 153ms / native 8ms = 19.1x speedup
SIMD kernel correctness	PASS (native result == scalar reference)
Base64 payload size	8192 bytes
Base64 benchmark iterations	6000
Base64 SIMD byte path	active (NEON-accelerated)
Base64 CN1 encode	209.000 ms
Base64 CN1 decode	198.000 ms
Base64 native encode	425.000 ms
Base64 encode ratio (CN1/native)	0.492x (50.8% faster)
Base64 native decode	428.000 ms
Base64 decode ratio (CN1/native)	0.463x (53.7% faster)
Base64 SIMD encode	54.000 ms
Base64 encode ratio (SIMD/CN1)	0.258x (74.2% faster)
Base64 SIMD decode	62.000 ms
Base64 decode ratio (SIMD/CN1)	0.313x (68.7% faster)
Base64 encode ratio (SIMD/native)	0.127x (87.3% faster)
Base64 decode ratio (SIMD/native)	0.145x (85.5% faster)
Image encode benchmark iterations	100
Image createMask (SIMD off)	11.000 ms
Image createMask (SIMD on)	1.000 ms
Image createMask ratio (SIMD on/off)	0.091x (90.9% faster)
Image applyMask (SIMD off)	123.000 ms
Image applyMask (SIMD on)	62.000 ms
Image applyMask ratio (SIMD on/off)	0.504x (49.6% faster)
Image modifyAlpha (SIMD off)	45.000 ms
Image modifyAlpha (SIMD on)	60.000 ms
Image modifyAlpha ratio (SIMD on/off)	1.333x (33.3% slower)
Image modifyAlpha removeColor (SIMD off)	63.000 ms
Image modifyAlpha removeColor (SIMD on)	63.000 ms
Image modifyAlpha removeColor ratio (SIMD on/off)	1.000x (0.0% slower)

shai-almog · 2026-07-20T08:46:21Z

Compared 146 screenshots: 146 matched.
Native Windows port, REAL shipping pipeline: the hellocodenameone screenshot suite rendered by a binary CROSS-COMPILED on Linux (clang-cl + xwin, WebView2 linked) and RUN on a Windows x64 runner. Compared against the in-repo baseline in scripts/windows/screenshots.

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 59ms / native 4ms = 14.7x speedup
SIMD float-mul (64K x300)	java 60ms / native 6ms = 10.0x speedup
SIMD kernel correctness	PASS (native result == scalar reference)

shai-almog · 2026-07-20T09:00:17Z

Compared 146 screenshots: 146 matched.
Native Windows port (arm64 / Apple Silicon - Arm): full hellocodenameone screenshot suite rendered offscreen with Direct2D/DirectWrite, plus the real benchmarks (base64 native/CN1/SIMD, image createMask/applyMask/modifyAlpha/PNG/JPEG, NEON SIMD kernels). Compared against the in-repo baseline in scripts/windows/screenshots.

Benchmark Results

Detailed Performance Metrics

Metric	Duration
SIMD kernel backend	SSE2 (x64) / NEON (arm64) native kernels
SIMD int-add (64K x300)	java 56ms / native 3ms = 18.6x speedup
SIMD float-mul (64K x300)	java 56ms / native 4ms = 14.0x speedup
SIMD kernel correctness	PASS (native result == scalar reference)

…suite SIGSEGV - RichTextComponent: use Font.equals() instead of == (PMD CompareObjectsWithEquals). - cn1_globals.m: TEMP diagnostic SIGSEGV/SIGABRT/SIGBUS handler that symbolizes the native fault site (backtrace_symbols_fd, async-signal-safe, glibc-only). The full native screenshot suite crashes deterministically (exit 139) in the theme phase and the VM installs no fatal-signal handler, so there is no crash output. This surfaces the fault address + native stack to isolate the compact-string / GC interaction. To be removed before merge. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

shai-almog · 2026-07-20T11:18:43Z

Compared 217 screenshots: 217 matched.
✅ Native Apple Watch (watchOS, Core Graphics) screenshot tests passed.

…marker The stderr crash output was not captured by the CN1SS screenshot harness (it tees stdout). Emit the SIGSEGV/SIGABRT/SIGBUS fault site + backtrace to stdout (fd 1) as well, and print a one-line install confirmation so we can verify the handler is wired into the native suite build. Still TEMP -- to be removed before merge. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

cn1GcInstallSignalHandler (gated on CN1_CONSERVATIVE_GC_ROOTS + first GC) did not emit the install marker on the desktop suite build, so the SIGSEGV handler was never active. Install it from an __attribute__((constructor)) at process load so it is guaranteed present regardless of GC configuration. Still TEMP -- remove before merge. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

…SEGV) Gate the NoZero single-allocation String fast paths behind CN1_ENABLE_FUSED_STRINGS (undefined = off): cn1InlSbToString, java_lang_StringBuilder_toString (routes to the non-fused toStringImpl twin), and cn1FusedLatin1Begin (used by newStringFromAsciiLen + cn1FusedConcat, which fall back to the safe __NEW+__INIT+separate-array path). These NoZero paths leave the slot GC-invisible (parentCls==0) with garbage fields during the fill, and the non-Latin-1 abandon branch is heavily exercised by theme-icon codepoints (>0xFF) in the native theme-fidelity tests where the suite deterministically SIGSEGVs. Compact byte[]/char[] string representation is unchanged; only single-alloc fusion is dropped. If this clears the crash, the NoZero window is the cause. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

github-actions · 2026-07-20T14:33:52Z

Developer Guide build artifacts are available for download from this workflow run:

Developer Guide quality checks:

AsciiDoc linter: No issues found (report)
Vale: No alerts found (report)
Paragraph capitalization: No paragraph capitalization issues (report)
LanguageTool: No grammar matches (report)
Image references: No unused images detected (report)

github-actions · 2026-07-20T14:45:28Z

✅ Continuous Quality Report

Test & Coverage

✅ Tests: 4294 total, 0 failed, 1 skipped
📊 Line coverage: 57.65% [HTML preview] [Download]
- Lowest covered classes
  - com.codename1.gaming.level.GameSceneView – 0.00%
  - com.codename1.crash.CrashProtection – 0.00%
  - com.codename1.payment.CommerceManager – 0.00%
  - com.codename1.crash.PiiScrubber – 0.00%
  - com.codename1.crash.CrashReportPayload – 0.00%
  - com.codename1.vr.VRView – 0.00%
  - com.codename1.appreview.RatingDialog – 0.00%
  - com.codename1.security.Secrets – 0.00%
  - com.codename1.vr.VRView$EyeLoop – 0.00%
  - com.codename1.gaming.level.TileLayer – 0.00%

Static Analysis

SpotBugs [Report archive]
- ✅ ByteCodeTranslator: 0 findings (no issues)
- ✅ android: 0 findings (no issues)
- ✅ codenameone-maven-plugin: 0 findings (no issues)
- ✅ core-unittests: 0 findings (no issues)
- ✅ ios: 0 findings (no issues)
✅ PMD: 0 findings (no issues) [Report archive]
✅ Checkstyle: 0 findings (no issues) [Report archive]

Generated automatically by the PR CI workflow.

shai-almog · 2026-07-20T15:05:57Z

Compared 147 screenshots: 147 matched.
Native Linux port (x64), GTK3/Cairo/Pango, ParparVM bytecode-to-C (no JVM): the hellocodenameone screenshot suite rendered by a native ELF built + run on the GitHub x64 runner. Baseline: scripts/linux/screenshots.

shai-almog · 2026-07-20T15:06:01Z

Compared 147 screenshots: 147 matched.
Native Linux port (arm64), GTK3/Cairo/Pango, ParparVM bytecode-to-C (no JVM): the hellocodenameone screenshot suite rendered by a native ELF built + run on the GitHub arm64 runner. Baseline: scripts/linux/screenshots-arm.

shai-almog force-pushed the parparvm-perf-improvements branch from 5d25e03 to b12b3e3 Compare July 20, 2026 04:29

shai-almog changed the title ~~ParparVM: compact strings, fused allocation & arithmetic codegen improvements~~ Core batch: ParparVM perf improvements + RichText component & GPU shadow rendering Jul 20, 2026

shai-almog force-pushed the parparvm-perf-improvements branch 3 times, most recently from 658fa10 to 60b776c Compare July 20, 2026 07:07

shai-almog force-pushed the parparvm-perf-improvements branch from 60b776c to 3ba3d93 Compare July 20, 2026 07:54

shai-almog force-pushed the parparvm-perf-improvements branch from 3ba3d93 to 440d7ba Compare July 20, 2026 07:54

shai-almog and others added 4 commits July 20, 2026 14:35

Fix fused String slice lifetime and CI gates

9920dfb

Fix remaining documentation and JavaScript CI checks

764c049

shai-almog merged commit c8c120e into master Jul 20, 2026
58 checks passed

shai-almog deleted the parparvm-perf-improvements branch July 20, 2026 17:46

shai-almog mentioned this pull request Jul 21, 2026

Restore Android clipboard FileProvider handling #5426

Merged

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shai-almog commented Jul 20, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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Summary

ParparVM (vm/)

Strings & allocation

Arithmetic & escape analysis

Concurrent GC

Benchmarks

UI components (CodenameOne/src, Ports/)

Testing

Risk

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Cloudflare Preview

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Benchmark Results

Detailed Performance Metrics

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Benchmark Results

Detailed Performance Metrics

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Native Android coverage

Native Android coverage

Benchmark Results

Detailed Performance Metrics

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Benchmark Results

Build and Run Timing

Detailed Performance Metrics

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✅ ByteCodeTranslator Quality Report

Test & Coverage

Benchmark Results

Static Analysis

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Benchmark Results

Build and Run Timing

Detailed Performance Metrics

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Benchmark Results

Detailed Performance Metrics

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Benchmark Results

Detailed Performance Metrics

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ParparVM (`vm/`)

UI components (`CodenameOne/src`, `Ports/`)

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